參數(shù)資料
型號(hào): ML4805CS
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: Variable Feedforward PFC/PWM Controller Combo
中文描述: 0.5 A POWER FACTOR CONTROLLER WITH POST REGULATOR, 212 kHz SWITCHING FREQ-MAX, PDSO18
封裝: PLASTIC, SOIC-18
文件頁(yè)數(shù): 2/13頁(yè)
文件大小: 125K
代理商: ML4805CS
ML4805
2
REV. 1.1 3/9/2001
PIN CONFIGURATION
PIN DESCRIPTION
PIN
NAME
FUNCTION
9
RAMP 2
PWM ramp sense input
10
ILIM
PWM current limit sense input
11
AGND
Analog ground
12
PGND
Power ground
13
PWM OUT PWM driver output
14
PFC OUT
PFC driver output
15
V
CC
Positive supply (connected to an
internal shunt regulator).
16
V
REF
Buffered output for the internal 7.5V
reference
17
V
FB
PFC transconductance voltage error
amplifier input
18
VEAO
PFC transconductance voltage error
amplifier output
PIN
NAME
FUNCTION
1
IEAO
PFC transconductance current error
amplifier output
2
I
AC
PFC gain control reference input
3
I
SENSE
Current sense input to the PFC current
limit comparator
4
V
RMS
Input for PFC RMS line voltage
compensation
5
SS
Connection point for the PWM soft start
capacitor
6
V
DC
PWM voltage feedback input
7
R
T
C
T
Connection for oscillator frequency
setting components
8
RAMP 1
PFC ramp input
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
IEAO
IAC
ISENSE
VRMS
SS
VDC
RTCT
RAMP 1
RAMP 2
VEAO
VFB
VREF
VCC
PFC OUT
PWM OUT
PGND
AGND
ILIM
TOP VIEW
ML4805
18-Pin PDIP (P18)
18-Pin SOIC (S18)
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